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Flea beetle populations are usually high during cold wet periods
in the spring. Adult flea beetles will begin to feed on the foliage
of young corn plants, eating very small streaks or windowpane
patches in the leaves and giving the plant a bleached appearance.
Wilting may result and plant growth can be retarded.
The most serious injury caused by the flea beetle is the dissemination
of the bacteria that causes Stewart's wilt disease in corn. The
bacteria often overwinter in the digestive system of the flea
beetle.
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